This will expose functionality supported by newer kernel interfaces.
Current userspace uses the chipset to determine which classes are likely
exposed, which generally works pretty well, but isn't as flexible as it
could be.
Unfortunately, the G98:GF100 video code in Mesa is still relying on the
kernel exposing incorrect vdec classes on some chipsets. The ABI16
kernel interfaces have a workaround for this in place, but that will no
longer be available once libdrm supports NVIF.
To prevent a regression when NVIF support is added, if there's no kernel
support for NVIF, libdrm will magic up a class list containing correct
vdec classes anyway instead of failing with -ENODEV.
v2.
- add description of abi16/vdec workaround
- add description of sclass/mclass
- leave client-provided pointer unmodified on abi16_sclass() failure
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Tested-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
v2.
- add a comment about the (ab)use of nouveau_object::length
- add a comment about abi16_object() return values
v3.
- handle new client + old kernel for sw classes
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Tested-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
They are less and easier to track than the public ones. The macro
drm_public will be going away by the end of the series.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
This hides all the abi16_* functions and the nouveau_debug variable,
they should have been private to begin with.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
I cannot make nouveau_bo_wrap thread-safe (by design), but it seems to be used to convert
drm fb's to nouveau_bo's and to get a notify handle from fifo->notify in nv30_screen.c
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@ubuntu.com>
Currently single pushbuffer can take up to 80% of VRAM and 80% of GART.
As this value seems to be arbitrary (and user may need to set it differently)
this patch adds support for 2 environment variables:
NOUVEAU_LIBDRM_VRAM_LIMIT_PERCENT (default 80)
NOUVEAU_LIBDRM_GART_LIMIT_PERCENT (default 80)
which will let users override pushbuffer VRAM/GART limits.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
v2: Take Maarten Lankhorst's suggestion of nesting the struct to prevent
sizeof() issues due to padding on older revisions.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Redesigned primarily to allow us to better take advantage of BO's having
fixed GPU virtual addresses on GeForce 8 and up, and to reduce the overhead
of handling relocations on earlier chipsets.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Ben Skeggs
Emil Velikov
Maarten Lankhorst
Maarten Lankhorst
Marcin Slusarz